Just want to give a quick update.
I called my regular vet as soon as they opened (Would've called as soon as I originally posted but I don't have any 24 hour exotic vets anywhere near me) and we got the financial part of it figured out. They'll take multiple checks and deposit them weekly until it's been paid.
I sent her a video of the tail and she said it doesn't look as bad as I think it does. She said the amputation does need to be redone but it doesn't look like an emergency situation. He hasn't been messing with it at all and she asked me to keep a close eye on him for the next couple of days.
She has to clear the financial plan with her boss tomorrow and she said hopefully I can bring him in on Friday for her to do the revision.
She said unless anything changes I shouldn't have anything to worry about over the next few days.
And thanks to Minnesota Zoo for pointing out a payment plan. I didn't know they could do that!